Casement window operator



Oct. 29, 1940 s. HAGSTROM 2,219,362

CASE'MENT wnmw OPERATOR- Filed Sept. 19. 19:58

30 W 5 14 w W Patented Oct. 29, 1940 UNITED STAT S PATENT Y oFFIcE 2,219,362 I CASEMIENT WINDOW OPERATOR Gotthard Hagstrom, Westville, Conn., assignor to The H. B. Ives Company, New Haven, Conn, a corporation of Connecticut Application September 19, 1938, Serial No. 230,546

4 Claims.

operator, which may still be effected by a crank.

the spindleof which passes through the screen.

1 Devices of this character have heretofore been provided, but have had certain disadvantages in their construction and operation. Those devices which have operated satisfactorily have been relatively expensive to manufacture, and the high price for which they were sold has militated 1 against a wide market.

Moreover, in some instances the prior devices have been difiicult to assemble and to place in operating position upon a window, and in some instances it has been difficult to draw the sash to a tightly closed position.

One object of the present invention is the provision of an efficient casement window operator which may be manufactured at a relatively low cost.

Another object of the invention is the provision of a casement window operator which maybe economically manufactured and which at the same time will be efiicient in operation, and be capable of being easily and readily installed in place.

Another object of the invention is the provision of a casement window operator provided with an operating arm actuated by a worm gear mounted in a, casing on the window frame, the casing also being provided with a worm operatively engaged with the gear, and the casing, worm, gear and arm being of such construction that theparts may be economically manufactured and readily assembled,so that the operator may be marketed at a relatively low price.

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the drawing:

' Fig. 1 isa front elevational view of a window provided with my improved operator;

Fig. 2 is a sectional view through the window showing a top plan view of the window operator;

Fig. 3 is'a sectional View on line 3-4 of Fig. 2; f Fig. 4 is a sectional View on line 44 of Fig. 3; .Fig. 5 is a view similar to Fig. 3 but showing the worm and gear casing, with the operating parts removed;

la 6 is a P an iew of, the worm gear;

Fig. '7 is a sectional view of the gear on line 1-1 of Fig. 6;

. Fig. 8 is a fragmentary top plan view. of the operating arm connected to the gear; and

Fig. 9 is a sectional view of one end of this arm on line 99 of Fig. 8.

To illustrate a preferred embodiment of my invention, I have shown a window frame ID to which is hinged at H .a sash 12, these being the usual parts of an ordinary casement window. To

the sash i2 is secured a tubular guide-member. l3v by means of screws I4, and within this tubular guide member is a slider l5 carried by a swinging arm H5. The above parts, with the exception of the arm If, may be of the usual-construction, for example, of the construction shown in the I-Iendrick Patent. No. 2,128,483, granted August 30, 1938, so that no further description-thereof is necessary herein. I

On the windowcasing is mounted a housing l'l-, this'housing being provided with-a base portion I8 and a chamber l9 within which a worm 20 is mounted. The upper side of the housing'p-rojects forwardly from the chamber l9, as shown at 2| in Figs. 3 and 5, to lie parallel to and spaced from the base plate l8, so that the worm wheel may. be positioned between these two parts, as willbe hereinafter described.

The housing is provided with front and back walls Hand 23 at the front and back of the chamber l9, and it willbe seen from reference to Figs. 3 and 5 that there is an opening 24 in the base 18 of the housing leading into the chamber. The walls 22 and 23 are recessed on their interior faces to receive the end necks of the worm, as shown, for example, in Fig. 5 in connection with the wall 22. As shown, each of these recesses comprises an upper portion 25 of substantially semi-circular shape, the rear wall of this portion of the recess terminating in a shoulder 26 beyond which the wall is inclined outwardly, as shown at 21, to enlarge the lower portion or mouth of the recess. The walls 22 and 23 are provided with openings 28 and 29 which register with the opening 30 in the worm 20. It will be understood that.

the upper semi-circular portions 25 of the recesses in the walls are of a size to snugly receive the necks 3| and 32 of the worm 20.

The chamber 19 is also provided with an opening -33 at its forward portion which communicates with the space between the upper plate 2| and the .base plate l8, and between these two plates a gear '35 is rotatably mounted by means of the screw 36. It will be noted from Fig. 3 that this'gear projects rearwardly through the opening 33 into the chamber l9, so that the gear teeth may be properly engaged by those of the worm.

It will also be noted that the gear teeth 31 are of special form, as shown in Fig. 7, in that they are milled into the side of the gear and are of segmental shape, and are not cut through the upper and lower faces of the gear.

As shown in Fig. '7, the gear is provided with a central opening 38 to receive the pin 36, and is provided with an annular recess 39 milled therein from its upper face, this recess surrounding the opening 38, and leaving a hollow sleeve or post post is slightly cut away so that it does not ex- 10 tend to the upper surface of the gear. As shown in Fig. 6, slots 4| and 42 are also cut through the 9 upper face of the gear to communicate with the annular recess 39, which slots open through the peripheral edge of the gear and which providev 0 therebetween an upstanding integral gear portion or post 43 the top of which is also cut away. vIt will be apparent that the slots 4| and 42 together with the rear portion of the recess 39 form in effect a U-shaped recess opening upwardly periphery.

The arm I6, as shown more particularly in Figs. 3, 8 and 9, is provided with. side flanges 45, so that this arm is of channel-shaped form in cross-section and may readily be formed by a stamping operation. At its rear end the'arm is provided with an upwardly offset portion 46 having an opening 4'! and a substantially semi-circular end portion 48'. It will be observed that the flanges 45 are continued around the end portion of thearm' to be joined in a substantially U- shaped depending member at this end of the arm. The above construction provides a simple, convenient and eflioient way to secure the arm I6 40 rigidly to the gearso that the turning of the gear will efiect rotation of the arm. The arm is placed with its opening 41 in registration with the'opening 38, and the flange at the rear end of the arm pressed downwardlyinto the annular 45 recess 39. It will be noted [that the slots 4| and 42 permit the entry of the side flanges into this recess, and permit this method of assembling the arm and gear, as shown in Fig. 3. It will also be observed that the portion 43 of the gear fits snug- 1y between the flanges 45 on opposite sides of the arm 16, so that these flanges will be supported internally, and movement of the gear will bring pressure upon both sides of the'flanges, and upon both flanges evenly, regardless of the direction in-which the gear is turned. There will thus be no tendency to deflect or distort the flanges from their normal positions.

In the assembly of the worm into the chamber l9 of the housingqthe worm is inserted through the lower opening 24, the necks 3| and 32 being first engaged by the walls 21 of the recesses in the front and rear walls of the housing. As the worm is pushed upwardly, as will be seen from Fig. 5, it is also moved slightly forwardly, and at the time that the necks reach the shoulder 2H,

parts of the worm teeth will have moved upward-1y to a point opposite the opening 33 so that the worm will have room to move forwardly, and can thereafter be pressed vertically upwardly until its necks are snugly received in the recesses 25, with the worm opening 30 opposite the openings 28 and 29 in the end walls. The shaping of the recesses in the end walls of the chamber l9 in this ,way provides for the strengthening of the housing, as the base plate I8 may be carried rearthrough the face of the gear and also through its wardly at the point I8 to a further extent at one side of the opening 24, thus giving a greater amount of metal in the casing at this. place, and providing a much stronger construction.

After the worm has been positioned as described above, and the arm l6 and gear 35 have been assembled, also as above described, the gear is inserted between the base plate l8 and the upper plate 2|, and. moved r'earwardly until its teeth are engaged by the teeth of the worm I8, and the pin or screw 36 put into place. Due to the shape of the gear teeth 31, it will be apparent 40 about this opening, the upper end of which that the worm will be held in place by the engagement of its teeth with those of the gear, and no other provision is necessary, therefore, for

preventing the worm moving downwardly out of its position in the slots in which its end necks are engaged.

The worm may be rotated by means of a crank 50 having a non-circular spindle 5| which may be inserted in the similanly shaped opening 30 of the worm, and it will be apparent that when the worm is rotated the gear 35 will also be rotated, and due to the rigid connection of the arm I6 therewith, the latter will becaused to swing about the pin 36 and thus operate the window sash. It will also be noted that all the parts of the operator are of'simple construction and are so designed that they are susceptible of economical manufacture, the result being a very eflicient structure which can be relatively cheaply made. While I have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to all of the details shown, but is capable of modification and variation within the spirit of the invention and within the scope of the appended claims.

What Iclaim is: 1 v v 1. In a casement window operator, a housing, a gear rotatably mounted in the housing, actuating means for said gear, a channel-shaped arm having depending flanges at its side edges, and said gear having upwardly opening recesses in which said flanges lie to rigidly connect said arm and gear. f'f

2. In a casement'window operator, a housing, agear rotatably mounted in 'the' housing, actuating means for said gear, an arm having a depending U-shaped flange'adjacent' one end, and

said gear having a U-shaped recess opening through its upper surface and its peripheral face to receive said flange and rigidly connect the gear and arm.

3. In a casement window operator, a housing, a gear rotatably mounted in the housing, actuating'means for said gear, a'channel-shaped arm having depending flanges at its side edges which extend aboutxthe rear end of the arm, and said' gear being cut away at its upper surface to receive said arm, and having an upwardly opening recess therein to receive. said flanges/to rigidly connect said gear and arm.

4. In a casement window operator, a housing, a gear rotatably mounted in the housing, actuating means for said gear, a channel-shaped arm having depending flanges at itsside edges which extend about the rear end of the arm, said gear being cut away at its upper surface to receive said arm, and having. an upwardly opening recess .therein to receive said flanges to rigidly connect said gear and arm, and a portion of said gear lying between said side flanges of the arm to give internal support thereto.

- GO'ITII-IARD HAGS'IROM:

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